所以如果我有一个gradle项目有这样的结构。我有一个名为special task的任务，我想应用于所有子项目（请参见下面的subprojects块）。我已经把打印放在dolast中，因为我希望它在任务的执行阶段发生。
如何使任务在代码编译时运行？例如，无论是一个子项目还是整个项目。

plugins {
    // Apply the application plugin to add support for building a CLI application
    id 'application'
}

repositories {
    // Use jcenter for resolving dependencies.
    // You can declare any Maven/Ivy/file repository here.
    jcenter()
}

application {
    // Define the main class for the application
    mainClassName = 'SubProject'
}

dependencies {
    // This dependency is used by the application.
    implementation 'com.google.guava:guava:28.0-jre'
}

subprojects {
    //Declarations below apply to all subprojects.

    //Apply Java to all subprojects
    apply plugin: 'java'

    //Add jcenter as the default repository for all subprojects.
    repositories {
        // Use jcenter for resolving dependencies.
        // You can declare any Maven/Ivy/file repository here.
        //jcenter()
    }

    dependencies {
        // Use JUnit test framework
        testImplementation 'junit:junit:4.12'
    }

    task outputSpecial {

        //Have this task run during the execution phase of the task.
        doLast {
            println "Special Task!"
        }
    }

}

谢谢你的帮助。